<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #i1{color: green}
        .c1{color: yellow}
        body>p,input[type="text"]{background-color: red}
        #i2{color: pink}
        div>div>p{background-color: yellow}
        a:link{color:green }
        a:visited{color:red }
        a:hover{color:yellow }
        a:active{color:pink }

    </style>
</head>
<body>
<ul>
    <li>刘备</li><li id="i1">关羽</li><li class="c1">张黑</li>
</ul>
<p>香蕉</p><p class="c1">苹果</p>
<input type="text">
<input type="password">
<div>
    <p>p1</p>
    <div><p id="i2">p2</p></div>
    <div><div><p>p3</p></div></div>
</div>
<a href="http://www.youku.com">优酷</a>
</body>
</html>